Tensile properties and microhardness evolution in medium carbon sheets subjected to continuous SPD process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F20%3A10245729" target="_blank" >RIV/61989100:27230/20:10245729 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.confer.cz/metal/2020/3490-tensile-properties-and-miicrohardness-evolution-in-medium-carbon-sheets-subjected-to-continuous-spd-process" target="_blank" >https://www.confer.cz/metal/2020/3490-tensile-properties-and-miicrohardness-evolution-in-medium-carbon-sheets-subjected-to-continuous-spd-process</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Tensile properties and microhardness evolution in medium carbon sheets subjected to continuous SPD process

Popis výsledku v původním jazyce

Development of technologies to produce the very fine structure is currently very intensively accelerated. Even in scientific research, it is recognized that precisely controlled forming processes, including special processes, enabling control of technological parameters with regard to the structure refinement, and tied with the strengthening of materials, currently had the highest gradient of utilization efficiency of the scientific research findings in practice. Severe plastic deformation (SPD) processes have been extensively investigated in the last decade to facilitate the production processes on nano-structured or ultrafine-grained (UFG) materials with unique utility properties. This work deals with analysis of utilization the forming equipment that uses a method of metal forming - DRECE (Dual Rolling Equal Channel Extrusion), which was designed to produce a material with ultra-fine grain structure. Increasing the mechanical properties of the formed sheet metal strip is primary. It has demonstrated that the forming method leads to an increase of strength characteristics (Yield strength and Ultimate tensile strength) of the investigated medium carbon steel Ck55, while a slight decrease in plasticity of the formed steel. DRECE forming method has a positive effect on the microhardness distribution. With the increasing number of passes was observed that a HV0.1 difference between lower and upper sheet surface decreases to the minimum value, which depends on the processing of the initial state of the investigated sheet. The increasing dislocation density of cold severely deformed medium carbon steel resulted in an increase of the tensile properties and hardness.

Název v anglickém jazyce

Tensile properties and microhardness evolution in medium carbon sheets subjected to continuous SPD process

Popis výsledku anglicky

Development of technologies to produce the very fine structure is currently very intensively accelerated. Even in scientific research, it is recognized that precisely controlled forming processes, including special processes, enabling control of technological parameters with regard to the structure refinement, and tied with the strengthening of materials, currently had the highest gradient of utilization efficiency of the scientific research findings in practice. Severe plastic deformation (SPD) processes have been extensively investigated in the last decade to facilitate the production processes on nano-structured or ultrafine-grained (UFG) materials with unique utility properties. This work deals with analysis of utilization the forming equipment that uses a method of metal forming - DRECE (Dual Rolling Equal Channel Extrusion), which was designed to produce a material with ultra-fine grain structure. Increasing the mechanical properties of the formed sheet metal strip is primary. It has demonstrated that the forming method leads to an increase of strength characteristics (Yield strength and Ultimate tensile strength) of the investigated medium carbon steel Ck55, while a slight decrease in plasticity of the formed steel. DRECE forming method has a positive effect on the microhardness distribution. With the increasing number of passes was observed that a HV0.1 difference between lower and upper sheet surface decreases to the minimum value, which depends on the processing of the initial state of the investigated sheet. The increasing dislocation density of cold severely deformed medium carbon steel resulted in an increase of the tensile properties and hardness.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/TH04010416" target="_blank" >TH04010416: Vývoj nové technologie zušlechťování ocelových pásů</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

METAL 2020 : 29th International Conference on Metallurgy and Materials : conference proceedings : May 20-22, 2020, Brno, Czech Republic, EU

ISBN

978-80-87294-97-0

ISSN

2694-9296

e-ISSN

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Počet stran výsledku

5

Strana od-do

339-343

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

20. 5. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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